Oil burner



June 26, 1928. 1,674,704

J. H. SMITH OIL BURNER Filed March 1926 Fig.1.

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Patented June 26, 1928. I, i it UNITED- STATE en: NT oFEl- Q I QUTH "me l l I d 1-, assesses-f i APpu-batibnfikd March f gg sb Serial-'No. 91, 327

Thisinventionrelates, to oil'burners and header communicating'with theburner tubes particularly to the part thereof by" which 1 so that the combustible mixture which is the oil vapor is mixed with the air to-prO: delivered to the header willpassinto the duce the combustible mixture. burner tubes. 7 i

"Some objects oftheinvention are to p1f0- 9 indicates a vaporizing tube, which-is vijde an oilburner having a" novel form of connected- 150 theloilsupply and in whichthe.

mixing, chamber which 1s simple in conoil is lvaporized. This tube' is situated struction but by which a more perfect miX- above one of the burner tubes so as to be ture can be obtained; andto providea novel heated-- thereby, as usual indevices. of-this construction by i which the cleaning; of: the character and/it haseonnecteditoits end a vaporizing tube may'befacilitated. supply pipe 10 leading to "a source (If Oil; I 'Inorder togive 'an' understanding oft-he supply. The deliveryendoifithevaporizing invention Ihave illustrated in the drawings tube'is shownas secured to a head 11 which a selected embodiment thereofwhieh will is provided with a small; lelivery orifice 15 now be deseribed after whichthe, novel tea 12 through which. theoil vaporis delivered 'tureswill be pointed out/in the appended with more or less force. Thisoil vapor-is,

claims. e v delivered into a mixing, chamber with which Fig. 1 is ,a sectional view of an oilburner one feature of my present, invention is conembodying: my invention andadapted to be cerned. 7 i I s I 130 used in a kitchen range v I .This nnXingcha-mber isinthe form of a Fig. 2 is atopjplan view'of the burner; tube 13 whichiis open at both vends, one endv Fig. 3 is an enlarged sectional viewoffthe of said) tubebeing screwed into the. wall; of mixing chamber; the header 4and; the. other end of said tube Fig. '4 is a fragmentaryview of one end being situated adjacent the deliveryv orifice of the'burner showing the opening through 12. The end l liofithemixing tube adjacent '75 the head 3 throughflwhich the vaporizing' the orifice12 is of:smaller diameterrithanthe tube is introduced or withdrawn, the 'vap'orf' end 15 which communicates with the header izing tube being shown in section; 4E and said tube. isu-providedwith one or, more The burner herein illustrated isofth'at air inlet openings 16 thatlead into the en- .30 familiar type whichc0mprisesa plurality of larged end" 15 adjacent the point wherejit so burner elements l'in the form of bul nerconnects with the sma'llerend 15L. Theouter tubes which are connectedto two end mem-- end of the smallerflportionl ie is preferably bers 3 aud t, each burner'tube having burner provided with. a fiaredTmouthl"? to facilitate openings 2there-in'. "The burner tubes and th nt f i e e \efidi m m s alfeitiedogether by means of The head 11 and "its vaporizingtubeycan 8b tierods 5. this being the usualconstruotion. be adjustedtoward and from the mixing In the case of a device adapted to be u tube'and when the head'll isproperlyadin the fi -b 0f ki henr ng e l g justed and-the burner. isoperating; the 0f the burner' be and he SiZ f h 611dstream of jetof vaporized" oil will be de- 40 pieces 1 will'be such' as to permit it to be set li e d ff th t r lg ith gnsidg into said fire-box as shownin' Fig. 1, w reable force and under pressure and, will; be in 6 indicates generally a kitchenrangehavdirected into the smaller end 14 of; the mixing the usual grates 7 and the fire-box 8 ingchamber.' This stream of: vaporized oil above the grates. Burners which are adapted will produce a suction which will draw air for kitchen range use are'usua-lly supported into the smaller endilet of the mixing tube, onithe grate as sho in F 3 p i such air becoming 'mixed with thefoil vapor. The end [pi c he r er her The'oil'vapor which is delivered tothe Inixshown is-in the nature ofa header into ing tube will expand more or less in the which the combustible mixtureiof oil vapor sm llerportion 14; but will be; delivered into 5i and is in d h i ior oi the the enlarged portionitfi withmore or less m the mixing tube.

pressure. As the mixture enters. the enlarged portion 15 it will. expand again and will also produce suction through the inlet ports 16 which will draw in an added supply of air, this added air becoming mixed with the charge which is delivered from the smaller portion 1 1. With this arrangement there is a double or two-stage expansion, one stage occurring in the smaller portion 1 1 of the tube and the other in the large portion 1 find that with this arrangement and with this two-stage expansion and with the construction by which the air is also admitted into the mixing chamber at two difi'erent places a more complete mixture of the oil vapor and air secured and the flame will burn at the burner openings 2 with little or no carbonization.

Another feature of my invention relates to the adjustability oi the vaporizing tube 9. This vaporizing tube rests freely on supports 18 andcan be adjusted longitudinally on said supports so as to vary the distance of the delivery orifice 12 from the end of This vaporizing tube is further arranged so that it can be readily removedifrom the burner.

Inthe operation of an oil burner of this type the part which requires most attention so far as cleaning is concerned is the vaporizing tube. In order that the burner should operate correctly it is, of course, necessary that the delivery orifice 12 should always be free and it is desirable also to occasionally clean out the interior of the vaporizing tube.

In'the present construction this vaporizing tube with its head 11 is readily removable from the burner to facilitate the cleaning operation as well as being adjustablerelative to the mixing chamber 13.

For adjusting the vaporizing tube I have provided the following mechanism. The end of the tube provided with a groove 19 in which is received one side of the head of an adjusting screw 20 which screws into a head 3- By turning the adjusting screw one way or the other the vaporizing tube which rests freely on its support 18 will be adjusted longitudinally thereby to vary the distance of the delivery orifice 12 from.

the end of the vaporizing tube. By means ofthis construction it is possible to adjust the vaporizing tube so that it will operate in.

the most efficient manner under the conditions of use.

The end 3 is provided with an opening 21 through Which the vaporizing tube extends and this opening is large enough to permit the head 11 to be passed therethrough. The bottom of the opening is formed with a slight recess or depression 22 in which the vaporizing tube is received and which prevents lateral movement of the vaporizing tube when it is adjusted by the screw 20.

To remove the vaporizing tube it is necessary first to disconnect the supply pipe 10 therefrom and when, this has been done said. vaporizing tube may be withdrawn from the burner through the aperture 21 andwhen this construction the operationo'f removing the vaporizing tube for cleaning purposes or for the purpose of substituting another tube is a relatively simple operation.

While the burner elements 1 are herein shown as burner tubes yet I'wish to state that these burner elements may be in some other form than burner tubes without departing from the invention. Furthermore, altl'iough I have illustrated herein a selected embodiment of the invention yet it will be understood thatv various changes in the constructional details may be made without departing from the invention.

I claim: I

1. In an oil burner, the combination with a plurality of burner tubes, of two end members to which the ends of the tubes" are secured, one of said membersubeing in the form of a manifold with which the burner tubes communicate and the other member having an opening therethrough, a tubular mixing chamber communicating at one end with the manifold member and open at the other end, a loosely-supported, vaporizing tube in which the oil is vaporized, a discharge head rigid with the vaporizing tube at one end thereof and spaced slightly from the open end of the mixing chamber, said head having a discharge orifice to deliver a jet of vaporized oil into the open end of the mixing chamber, the other end of said vaporizing tube extending through the opening in the end member which opening is of suflicient size to permitthe discharge head to pass therethrough, said vaporizing tube and discharge head being separable from the other parts of the burner, whereby the vaporizing tube and discharge head may be readily removed from the burner by withdrawing them through said opening.

.2. In an oil burner, the combination with two end members, one off which has an opening therethrough, of a plurality of burner tubes connecting said members, the other member constituting a manifold with which the burner tubes communicate, a tubular mixing chamber communicating at one end with the manifold and open at the other end, a vaporizing tube having a discharge head at one end provided with a discharge orifice an opening 24 of.

said tube being detachable from the burner vaporizing tube being separable from its and being loosely supported in position with adjusting means, whereby said vaporizing 10 the discharge orifice directed toward the open a tube and discharge head may be readily reend of the mixing chamber, and means for moved from the burner. 5 adjusting the vaporizing tube in the direc- In testimony whereof, -I have signed my tion of its length, said opening through the name to this specification.

end member being of a size to permit the I a discharge head to pass therethrough and the JAMES H. SMITH- 

